AOC L32DK99FU User manual

32″_42” LCD TV AOC L32_42DK99FU
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Service
Service
Service
TABLE OF CONTENTS
Description Page Description Page
SAFETY NOTICE
ANY PERSONATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
6.2 Power Board……..……………….…….……….......35
6.3 Key Board………………………..……..……….......39
6.4 IR Board………………………….……..……….......40
7. Adjustment……..………………………….................41
8. Block Diagram.…….................................................42
9. Schematic Diagram…..…………....………………...43
9.1 Main Board…………………………………...….......43
9.2 Power Board…..………….….……...………….......61
9.3 Key Board……………….……….…………….........63
9.4 IR Board……...………….……….…………….........64
10. Exploded View………………………………….…...65
11. BOM List……………….………………….………….67
Table of Contents........……...................................…........1
Important Safety Notice.......................................……......2
Revision List…………………………………………………3
1. General Specification..............................……...…........4
2. Operating Instructions………………...…….……….......6
2.1 The Use of Remote Control…….…..……….…….......6
2.2 To Use the Menu….....…………………….……….......7
2.3 How to Connect……..……………….…….……….....14
2.4 Front Panel Control Knobs…….………….……….....20
3. Input/Output Specification…………....................…....21
4. Mechanical Instructions…………………….................23
5. Repair Flow Chart ……………………….…….…….....27
6. PCB Layout ………………..…………………....….......33
6.1 Main Board…………..………………...…….…….......33

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Important Safety Notice
Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The
service procedures recommended by AOC and described in this service manual are effective methods of
performing service operations. Some of these service operations require the use of tools specially designed for
the purpose. The special tools should be used when and as recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully
read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper
service methods may damage the equipment. It is also important to understand that these CAUTIONS and
NOTICES ARE NOT EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all
conceivable ways in which service might be done or of the possible hazardous consequences of each way.
Consequently, AOC has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service
procedure or tool which is not recommended byAOC must first satisfy himself thoroughly that neither his safety
nor the safe operation of the equipment will be jeopardized by the service method selected.
Hereafter throughout this manual, AOC Company will be referred to as AOC.
WARNING
Use of substitute replacement parts, which do not have the same, specified safety characteristics might create
shock, fire, or other hazards.
Under no circumstances should the original design be modified or altered without written permission fromAOC.
AOC assumes no liability, express or implied, arising out of any unauthorized modification of design.
Servicer assumes all liability.
FOR PRODUCTS CONTAINING LASER:
DANGER-Invisible laser radiations when openAVOID DIRECT EXPOSURE TO BEAM.
CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may
result in hazardous radiation exposure.
CAUTION -The use of optical instruments with this product will increase eye hazard.
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL
MANUFACTURER'S REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE
PARTS LIST SECTION OF THIS SERVICE MANUAL.
Take care during handling the LCD module with backlight unit
-Must mount the module using mounting holes arranged in four corners.
-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the
screen.
-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in
damage to the panel.
-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).
-Make certain that treatment person’s body is grounded through wristband.
-Do not leave the module in high temperature and in areas of high humidity for a long time.
-Avoid contact with water as it may a short circuit within the module.
-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth
may
damage the panel.)

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Revision List
Version Release Date Revision Instructions TPV Model
A00 Jun.30,2010 Initial Release E32AA2NCWGA1NNS
A00 Jun.30,2010 Initial Release E42AA2NCWGA1NNS

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1. General Specification
Computer formats

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Video formats

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2. Operating Instructions
2.1 The Use of Remote Control

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2.2 To Use the Menus
1. Press the MENU/EXIT button to display or close the main menu.
2. Use the “”, “v”, “﹤”, “﹥”and “ENTER” to move around to select, adjust or confirm an item in the OSD
(On Screen Display) menu.
Press the MENU/EXIT button to enter the main OSD.Adjust the items including Picture Setting, Audio
Setting, Feature Setting, Installation Setting. However, some function items in the menus may only be
enabled in the particular source modes.

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Picture Setting
The Picture Setting in TV mode shows as below.

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Picture Setting ( For PC source only )

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Audio Setting

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Features Setting

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Feature Setting (For PC source only)

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Installation setting

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2.3 How to Connect
Using Your Antenna or Cable for TV
Note: It is strongly recommended that you connect the antenna/cable input using a 75-ohm coaxial cable to
receive optimum picture quality.
1. Turn off the TV.
2. Connect the coaxial (RF) connector from your antenna or cable (out-of-the-wall, not from the Cable Box) to
the ANTENNA connector at the rear of the TV
3. Turn on the TV.
4. Select TV using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV, or
pressing the TV button on the Remote Control.
5. Connect the AV OUT and AV IN of the other TV, the signal will display on the other TV.
Using the Antenna or Cable for your VCR
1. Turn off the TV.
2. Connect the “Output to TV”, “RF Out” or “Antenna Out” connector on the rear of your VCR to the ANTENNA
connector at the rear of the TV.
3. Turn on the TV.
4. Select TV using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV or
directly by pressing the TV button on the Remote Control.
5. Connect the AV OUT and AV IN of the other TV, the signal will display on the other TV.

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Connecting Your TV Set-Top Box
Using HDMI
TV Set-Top Boxes that have a HDMI digital interface should be connected to the HDMI input of the LCD TV for
optimal results.
Using Component Video
Connecting your TV Set-Top Box (Better):
1. Turn off the TV and TV Set-Top Box.
2. Connect the Pr (red color) connector on your TV Set-Top Box to the corresponding Pr (red color) connector
in the Component group.
3. Connect the Pb (blue color) connector on your TV Set-Top Box to the corresponding Pb (blue color)
connector in the Component group.
4. Connect the Y (green color) connector on your TV Set-Top Box to the corresponding Y (green color)
connector in the Component group.
5. Using an audio cable (red and white connectors), connect the cable to the audio output connectors
associated with the Component output on your TV Set-Top Box and connect the other end to the audio
connectors associated with the Component.
6. Turn on the TV and TV Set-Top Box.
7. Select YPbPr using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV or
directly by pressing the COMP button on the Remote Control.
NOTE
Refer to your TV Set-Top Box user manual for more information about the video output requirements of the
product or consult your cable or satellite operator.

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Connecting Your Basic Set-Top Box
Using Composite Video
1. Turn off the TV and Set-Top Box.
2. Using an AV Cable, connect the Video (yellow color) connector on your Set-Top Box to the corresponding
Video (yellow color) connector in the AV group at the rear of the TV.
3. Using the red and white connectors, connect the cable to the audio output connectors associated with the
Video output on your Set-Top Box and connect the other end to the audio connectors associated with the AV
input at the rear of the TV.
4. Turn on the TV and Set-Top Box.
5. Select AV-1 using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV or
directly by pressing the VIDEO button on the Remote Control.
Using Coax (RF)
1. Turn off the TV.
2. Using a Coax (RF) cable, connect one end to the TV.
3. Turn on the TV.
4. Select TV using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV or
directly by pressing the TV button on the Remote Control.
Connecting Your DVD Player
Using HDMI
DVD players that have a digital interface such as HDMI (High Definition Multimedia Interface) should be
connected to the HDMI input of the LCD TV for optimal results.
Connecting your DVD Player (Best)
1. Turn off the TV and DVD player.

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2. Connect a HDMI cable to the HDMI output of your DVD player and the other end to the HDMI Input at the
rear of the TV.
3. Turn on the TV and DVD player.
4. Select HDMI using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV or
directly by pressing the HDMI/PC button on the Remote Control.
For DVD Players with DVI:
1. Turn off the TV and DVD player.
2. Using a HDMI-DVI cable, connect the DVI end to your DVD player and the HDMI end to the HDMI Input at
the rear of the TV.
3. Turn on the TV and your DVD player.
4. Select HDMI using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV, or
directly by pressing the HDMI/PC button on the Remote.
NOTE
Refer to your DVD player user manual for more information about the video output requirements of the product.
The DVI to HDMI connection provides video only. Connection to an alternate audio player is required for audio
output.
Using Component Video
Connecting your DVD Player (Better)
1. Turn off the TV and DVD player.
2. Connect the Pr (red color) connector on your DVD player to the corresponding Pr (red color) connector in the
Component at the rear of the TV.
3. Connect the Pb (blue color) connector on your DVD player to the corresponding Pb (blue color) connector in
the Component group at the rear of the TV.
4. Connect the Y (green color) connector on your DVD player to the corresponding Y (green color) connector in
the Component group at the rear of the TV.
5. Using an audio cable (red and white connectors), connect the cable to the audio output connectors
associated with the Component output on your DVD player and connect the other end to the audio connectors
associated with the Component input at the rear of the TV.
6. Turn on the TV and DVD player.
7. Select Component using the SOURCE button on the Remote control or the INPUT keypad on the side of the
TV or directly by pressing the COMP button on the Remote Control.
NOTE
Refer to your DVD player user manual for more information about the video output requirements of the product.

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Using S-Video (AV-2)
Connecting your DVD Player (Good):
1. Turn off the TV and DVD player.
2. Connect the S-Video jack on the rear of your DVD player to the S-Video jack in the AV group on the rear of
the TV.
3. Connect an audio cable (white and red connectors) to the audio output connectors associated with the
S-Video output on your DVD player and connect the other end to the audio connectors associated with the AV
input on the rear of the TV.
4. Turn on the TV and DVD player.
5. Select AV-2 using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV, or
directly by pressing the VIDEO button on the Remote Control.
Using Composite (AV) Video
Connecting your DVD Player (Good)
1. Turn off the TV and DVD player.
2. Connect the Video (yellow color) connector on your DVD player to the Video (yellow color) connector in the
AV group.
3. Connect the R (red color) and L (white color) audio connectors on your DVD player to the corresponding R
(red color) and L (white color) audio input connectors in the AV group.
4. Turn on the TV and DVD Player.
5. Select AV using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV or
directly by pressing the VIDEO button on the Remote Control.

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Connecting Your VCR or Video Camera
1. Turn off the TV and VCR or Video Camera.
2. Connect the S-Video jack on the rear of your VCR or Video Camera to the S-Video jack in the AV group on
the rear of the TV.
3. Connect an audio cable (white and red connectors) cable to the audio output connectors associated with the
S-Video output on your VCR or Video Camera and connect the other end to the audio connectors associated
with the AV input on the rear of the TV.
4. Turn on the TV and VCR or Video Camera.
5. Select AV-2 using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV or
directly by pressing the VIDEO button on the Remote Control.
NOTE
Refer to your VCR or Video Camera user manual for more information about the video output requirements of
the product.
Connecting to a PC
1. Turn off the TV and PC.
2. Connect a 15-pin D-Sub RGB (VGA) cable to the RGB output of your PC and the other end to the VGA input
at the rear of the TV.
3. Connect the Audio Out on your computer to the AUDIO input at the rear of the TV.
4. Turn on the TV and PC.
5. Select VGA using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV or
directly by pressing the HDMI/PC button on the Remote.
NOTE
For the best picture quality when connecting a computer through VGA, set your computer timing mode to native
resolution of panel. Please refer to the PC or graphic card’s user guide for additional information on how to set
the timing mode and the video output requirements of the product.

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2.4 Front Panel Control Knobs